广金钱草分布和品质适宜性区划研究(1)
[摘要] 通过对华南和西南地区(广东、广西、海南和云南)的广金钱草实地调研，结合夏佛塔苷、多糖的含量，运用最大信息熵模型和地理信息技术，分别筛选出影响广金钱草分布适宜性和品质适宜性的主导生态因子，再对广金钱草的分布和品质进行适宜性区划。分布区划的结果表明，4月均温、最冷季节均温、土壤类型和寒冷指数4个生态因子对广金钱草分布适宜性的影响最大。品质区划的结果表明：①多糖含量与4月降水量呈显著性正相关；夏佛塔苷含量与4月均温、最冷季节均温呈显著性负相关，与10月、11月降水量，4月、5月日照时长呈极显著负相关，与4月降水量、温度季节性变化标准差呈显著性正相关，与2月、3月降水量呈极显著性正相关。②分别以夏佛塔苷、多糖为品质指标，依据品质区划模型绘制出广金钱草的品质区划图。该研究可为广金钱草生产区划、种植基地选择和定向培育提供科学选址依据。
[关键词] 广金钱草； 最大信息熵； 地理信息技术； 分布适宜性； 品质适宜性
[Abstract] The research on distribution and quality suitability division of Desmodium styracifolium were formulated by Maxent and ArcGIS model based on the content of schaftoside and polysaccharide of D. styracifolium and its field research in the south and southwest areas of China (Guangdong， Guangxi， Hainan and Yunnan)， and the most suitable habitats of distribution suitability and quality suitability were screened. The distribution suitability results indicated that average air temperature in April，mean temperature of coldest quarter， soil type， coldness index were found as the four dominant factors contributing to the plant distribution. The quality suitability results indicated that： ①Polysaccharide content and precipitation in April show significant positive correlation；Schaftoside content and mean temperature of April， mean temperature of coldest quarter show significant negative correlation. Schaftoside content shows significant negative correlation with the precipitation in October and November and the sunshine duration in April and May， while there is a significant positive correlation between schaftoside content and precipitation in April and temperature seasonality standard deviation， and a highly significant positive correlation was found between schaftoside content and precipitation in February and March. ②The quality zoning map was drawn depend on general content of polysaccharide and schaftoside as the index of quality. And this research provides scientific location basis for the production regionalization， cultivation bases selection and directive breeding of D. styracifolium.
, http://www.100md.com
[Key words] Desmodium styracifolium； MaxEnt； AcrGis； distribution suitability； quality suitability
廣金钱草Desmodium styracifolium (Osbeck) Merr.为豆科植物，以地上部分入药[1]，生于山坡、草地、土坎或灌木丛中，是两广地区常用中药，具有清热除湿，利尿通淋的功效，对肾结石、胆结石治疗效果显著。随着广金钱草广泛应用，野生资源已经不能满足市场和临床需要，现在市场上流通的广金钱草主要以人工栽培为主。生态环境与药材产量和质量关系密切，盲目引种栽培，加之栽培技术不完善，会导致药材产量和品质下降，各产地质量差异较大，同时造成土地浪费。本课题组近几年对广金钱草的规范化生产关键技术[2]、育种技术[3-4]等子方面开展了大量研究工作，现拟通过开展广金钱草分布和品质适宜性区划研究，推动广金钱草在适宜区域进行种植，并提高药材品质。, http://www.100md.com(李丹 唐晓敏 朱寿东 杨全 程轩轩 张春荣 潘利明 陈端妮)
[关键词] 广金钱草； 最大信息熵； 地理信息技术； 分布适宜性； 品质适宜性
[Abstract] The research on distribution and quality suitability division of Desmodium styracifolium were formulated by Maxent and ArcGIS model based on the content of schaftoside and polysaccharide of D. styracifolium and its field research in the south and southwest areas of China (Guangdong， Guangxi， Hainan and Yunnan)， and the most suitable habitats of distribution suitability and quality suitability were screened. The distribution suitability results indicated that average air temperature in April，mean temperature of coldest quarter， soil type， coldness index were found as the four dominant factors contributing to the plant distribution. The quality suitability results indicated that： ①Polysaccharide content and precipitation in April show significant positive correlation；Schaftoside content and mean temperature of April， mean temperature of coldest quarter show significant negative correlation. Schaftoside content shows significant negative correlation with the precipitation in October and November and the sunshine duration in April and May， while there is a significant positive correlation between schaftoside content and precipitation in April and temperature seasonality standard deviation， and a highly significant positive correlation was found between schaftoside content and precipitation in February and March. ②The quality zoning map was drawn depend on general content of polysaccharide and schaftoside as the index of quality. And this research provides scientific location basis for the production regionalization， cultivation bases selection and directive breeding of D. styracifolium.
, http://www.100md.com
[Key words] Desmodium styracifolium； MaxEnt； AcrGis； distribution suitability； quality suitability
廣金钱草Desmodium styracifolium (Osbeck) Merr.为豆科植物，以地上部分入药[1]，生于山坡、草地、土坎或灌木丛中，是两广地区常用中药，具有清热除湿，利尿通淋的功效，对肾结石、胆结石治疗效果显著。随着广金钱草广泛应用，野生资源已经不能满足市场和临床需要，现在市场上流通的广金钱草主要以人工栽培为主。生态环境与药材产量和质量关系密切，盲目引种栽培，加之栽培技术不完善，会导致药材产量和品质下降，各产地质量差异较大，同时造成土地浪费。本课题组近几年对广金钱草的规范化生产关键技术[2]、育种技术[3-4]等子方面开展了大量研究工作，现拟通过开展广金钱草分布和品质适宜性区划研究，推动广金钱草在适宜区域进行种植，并提高药材品质。, http://www.100md.com(李丹 唐晓敏 朱寿东 杨全 程轩轩 张春荣 潘利明 陈端妮)